GeorgeMJ23
commented
2 years ago After calculating with SHARPpy the storm relative helicity(SRH) for 0-3 km, for the following sounding profile, I got some very low values compared to other similar programs that can do the calculations.
For example i got with SHARPpy an SRH0-3 of 195 m²/s² While i got with RAOB an SRH0-3 of 718 m²/s² And using the page of http://contourmap.internet-box.ch/hpbo/sounding_create.aspx (for 11 October 2015 for 16716 station) i got an SRH0-3 of 678 m²/s²
Same for SRH0-1 km where i got: With SHARPpy an SRH0-3 of 141 m²/s² And with RAOB an SRH0-3 of 530 m²/s²
Is there a bug in SHARPpy's code for SRH calculation? Or the converted format I've created from the original sounding in order to use in SHARPpy is faulty?
Furthermore comparing the 2 hodographs from RAOB and SHARPpy(see pictures in the end) tells me SHARPpy might not take the first 6 km of the surface the same way as RAOB and other programs do.
The sounding is: http://weather.uwyo.edu/cgi-bin/sounding?region=europe&TYPE=TEXT%3ALIST&YEAR=2015&MONTH=10&FROM=1112&TO=1112&STNM=16716
And the corresponding sounding format I used with SHARPpy is:
%TITLE% 16716 111015/0012 LEVEL HGHT TEMP DWPT WDIR WSPD ------------------------------------------------------------------- %RAW% 1002.0, 15, 28.0, 20.0, 160, 4.6299999960000005 1000.0, 56, 27.2, 17.2, 160, 5.658888884 998.0, 74, 26.2, 16.2, 160, 6.6877777720000005 978.0, 250, 24.6, 15.9, 160, 15.947777764 942.0, 578, 21.5, 15.4, 170, 15.947777764 925.0, 737, 20.0, 15.2, 185, 19.034444428 921.0, 774, 19.6, 15.5, 187, 20.063333316 910.0, 878, 19.4, 14.4, 194, 22.121111092 905.0, 926, 20.8, 13.8, 197, 23.14999998 892.0, 1050, 20.1, 12.6, 205, 25.7222222 850.0, 1465, 17.6, 8.6, 210, 28.29444442 823.0, 1741, 16.4, 6.4, 214, 30.86666664 791.0, 2072, 13.9, 4.9, 220, 33.953333304 700.0, 3094, 6.2, 0.2, 220, 30.86666664 578.0, 4633, -5.7, -8.4, 223, 29.837777752 575.0, 4673, -5.3, -15.3, 223, 29.837777752 546.0, 5078, -7.5, -29.5, 224, 29.323333308 525.0, 5383, -8.7, -25.7, 224, 29.323333308 520.0, 5457, -9.5, -17.5, 224, 28.808888864 504.0, 5699, -9.9, -31.9, 225, 28.808888864 500.0, 5760, -10.5, -31.5, 225, 28.808888864 477.0, 6120, -12.9, -24.9, 225, 27.265555532 467.0, 6282, -13.8, -33.1, 225, 26.236666644 466.0, 6298, -13.9, -33.9, 225, 26.236666644 451.0, 6545, -16.1, -26.1, 228, 25.207777756 425.0, 6990, -17.9, -34.9, 234, 23.14999998 405.0, 7348, -20.7, -44.7, 239, 21.606666648 400.0, 7440, -21.7, -45.7, 240, 21.092222204 353.0, 8344, -30.1, -30.9, 245, 21.606666648 351.0, 8384, -30.4, -32.2, 245, 21.606666648 339.0, 8630, -32.3, -40.3, 242, 21.092222204 336.0, 8693, -32.1, -56.1, 241, 21.092222204 327.0, 8883, -33.7, -59.7, 238, 20.57777776 316.0, 9121, -35.7, -58.1, 235, 20.063333316 312.0, 9210, -36.5, -57.5, 235, 20.063333316 308.0, 9299, -37.1, -43.1, 235, 20.063333316 300.0, 9480, -38.9, -43.9, 235, 20.063333316 268.0, 10241, -45.7, -50.7, 235, 23.14999998 250.0, 10700, -48.5, -54.5, 235, 25.207777756 235.0, 11102, -51.2, -57.6, 250, 27.779999976 213.0, 11740, -55.5, -62.5, 259, 36.01111108 212.0, 11770, -55.3, -67.3, 260, 36.525555524 200.0, 12140, -57.9, -65.9, 265, 41.15555552 191.0, 12429, -59.5, -67.5, 269, 44.242222184 190.0, 12461, -59.2, -67.2, 270, 44.756666628 184.0, 12663, -57.7, -65.7, 268, 38.5833333 167.0, 13260, -62.4, -71.0, 260, 19.034444428 157.0, 13641, -65.4, -74.3, 270, 17.491111096 153.0, 13800, -66.7, -75.7, 265, 20.57777776 150.0, 13920, -64.1, -74.1, 260, 24.693333312 147.0, 14045, -62.7, -77.6, 260, 26.751111088000002 141.0, 14303, -59.9, -84.9, 263, 23.664444424 130.0, 14808, -62.7, -92.7, 269, 18.00555554 120.0, 15306, -60.1, -90.9, 275, 12.346666656 118.0, 15410, -59.5, -90.5, 265, 11.317777768 112.0, 15735, -60.5, -91.1, 235, 8.745555548 107.0, 16019, -61.3, -91.7, 240, 11.317777768 103.0, 16256, -62.0, -92.1, 260, 13.889999988 100.0, 16440, -62.5, -92.5, 255, 15.947777764 92.0, 16952, -64.2, -94.2, 260, 17.491111096 91.3, 16999, -64.3, -94.3, 263, 18.519999984000002 89.0, 17157, -63.7, -93.8, 275, 21.606666648 81.0, 17740, -61.3, -91.9, 280, 15.947777764 78.0, 17973, -60.4, -91.1, 300, 14.918888876 75.0, 18216, -59.4, -90.3, 285, 17.491111096 74.8, 18233, -59.3, -90.3, 285, 16.976666652 73.0, 18385, -59.7, -90.7, 285, 12.346666656 70.0, 18650, -55.5, -87.5, 285, 4.6299999960000005 69.3, 18714, -54.9, -86.9, 261, 3.601111108 69.0, 18742, -55.1, -87.1, 250, 3.086666664 66.0, 19023, -57.4, -88.9, 225, 6.6877777720000005 64.0, 19218, -58.9, -90.1, 220, 10.28888888 62.8, 19337, -59.9, -90.9, 226, 12.8611111 62.0, 19418, -59.4, -90.5, 230, 14.918888876 58.0, 19839, -57.1, -88.8, 275, 9.259999992000001 56.0, 20061, -55.8, -87.8, 245, 8.745555548 55.8, 20084, -55.7, -87.7, 246, 8.745555548 51.0, 20655, -57.7, -89.7, 280, 14.918888876 50.0, 20780, -56.5, -88.5, 290, 14.404444432 49.4, 20857, -55.3, -87.3, 302, 12.8611111 49.0, 20909, -55.5, -87.5, 310, 11.832222212 47.4, 21120, -56.3, -88.3, 310, 8.745555548 %END%The pictures of RAOB and SHARPpy program for the above sounding: https://i.postimg.cc/nF0WqzSB/RAOB-Case1.png https://i.postimg.cc/mLbqcMjT/SHARPpy-case1.png
Probably the mistake is mine as I've used m/s in the wind speed data for SHARPpy and it needs to be in knots.
wblumberg
After calculating with SHARPpy the storm relative helicity(SRH) for 0-3 km, for the following sounding profile, I got some very low values compared to other similar programs that can do the calculations.
For example i got with SHARPpy an SRH0-3 of 195 m²/s² While i got with RAOB an SRH0-3 of 718 m²/s² And using the page of http://contourmap.internet-box.ch/hpbo/sounding_create.aspx (for 11 October 2015 for 16716 station) i got an SRH0-3 of 678 m²/s²
Same for SRH0-1 km where i got: With SHARPpy an SRH0-3 of 141 m²/s² And with RAOB an SRH0-3 of 530 m²/s²
Is there a bug in SHARPpy's code for SRH calculation? Or the converted format I've created from the original sounding in order to use in SHARPpy is faulty?
Furthermore comparing the 2 hodographs from RAOB and SHARPpy(see pictures in the end) tells me SHARPpy might not take the first 6 km of the surface the same way as RAOB and other programs do.
The sounding is: http://weather.uwyo.edu/cgi-bin/sounding?region=europe&TYPE=TEXT%3ALIST&YEAR=2015&MONTH=10&FROM=1112&TO=1112&STNM=16716
And the corresponding sounding format I used with SHARPpy is:
The pictures of RAOB and SHARPpy program for the above sounding: https://i.postimg.cc/nF0WqzSB/RAOB-Case1.png https://i.postimg.cc/mLbqcMjT/SHARPpy-case1.png